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API · /vat-api

VAT & Sales Tax API

healthy 4,219 Subscribers

VAT, GST and sales-tax rates for 128 countries — plus US state and Canadian province sub-rates — with a built-in tax calculator. Get the standard rate for any country (e.g. DE → 19%), compute the tax and gross total on a net amount (e.g. €100 in Germany → €19 tax, €119 total), apply a US state or Canadian province rate, or list every country. Ideal for e-commerce checkouts, invoicing, SaaS billing and pricing tools. (Standard rates, not tax advice.)

#vat #sales-tax #gst #tax #ecommerce #rates
api.oanor.com/vat-api
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Machine-readable spec so AI agents can integrate this API.

/api/vat-api/openapi.json
/api/vat-api/llms.txt

Discovery: GET /api/index.json lists every API.

API health

healthy
Uptime
100.00%
Server probes · 24h
Avg latency
116 ms
Server probes · 24h
Subscribers
4,219
active
Total calls
288
last 7 days
status Full status page → · 24 probes/24h

Pricing

Pick a tier — billed monthly, cancel anytime.

Free

Free

  • 2,500 calls / month
  • 2 requests / second
  • Hard cap (429 above quota, no overage)
  • 2,500 calls/month
  • 2 req/sec
  • Rates + calculator
  • No credit card
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Starter

€8.00 /month

  • 45,000 calls / month
  • 8 requests / second
  • Hard cap (429 above quota, no overage)
  • 45k calls/month
  • 8 req/sec
  • State / province rates
  • Email support
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Pro

€22.00 /month

  • 250,000 calls / month
  • 20 requests / second
  • Hard cap (429 above quota, no overage)
  • 250k calls/month
  • 20 req/sec
  • Checkout / invoicing
  • Priority support
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Mega

€58.00 /month

  • 1,100,000 calls / month
  • 50 requests / second
  • Hard cap (429 above quota, no overage)
  • 1.1M calls/month
  • 50 req/sec
  • SaaS billing platform
  • Dedicated SLA
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Built by

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PremiumApi

Related APIs

Other APIs with overlapping tags.

GST API

Validate and decode Indian GSTINs (the 15-character Goods & Services Tax Identification Number) instantly and entirely offline. The validate endpoint checks the structure and recomputes the official GSTIN check digit — the base-36 weighted algorithm the GSTN itself uses — and confirms the embedded state code is real, returning a clear valid/invalid verdict with the specific reasons a number fails. The decode endpoint breaks a GSTIN into its parts: the GST state/UT code and its name, the embedded 10-character PAN, the PAN holder type (company, individual/proprietor, firm/LLP, HUF, trust, government and more, read from the PAN's 4th letter), the entity registration number, the default 'Z' slot and the check digit. A states endpoint returns the full GST state-code reference for building dropdowns and lookups. Everything is pure computation — no network call, no key, no cache — so it is fast and private, ideal for checkout and onboarding forms, invoicing and e-invoice/e-way-bill pipelines, vendor master data cleansing and bulk validation. A structural GSTIN validator and decoder — distinct from EU VAT-number validation (vat), IBAN bank-account validation (iban) and card-number checks (creditcard). Note: this verifies the number's structure and check digit, not whether it is actively registered in the GSTN portal. No upstream key, no cache.

api.oanor.com/gst-api

Frequently asked questions

Quick answers about pricing, quotas, and integration.

How do I get an API key for VAT & Sales Tax API?
Sign up for free at oanor.com, generate an API key from the developer dashboard, and call VAT & Sales Tax API with the x-oanor-key header. No credit card needed for the free tier.
What's the rate limit for VAT & Sales Tax API?
Free tier allows 1 request per second. Paid plans scale up to 50 requests per second on the Mega tier. Hard limits return HTTP 429 above the quota — no surprise overage charges.
How much does VAT & Sales Tax API cost?
VAT & Sales Tax API has a free tier with 100 calls / month. Paid plans start at €8.00 / month with higher quotas and faster rate limits.
Can I cancel my subscription anytime?
Yes. Plans are billed monthly and you can cancel anytime from your billing dashboard. No long-term contracts and no cancellation fee.
Is VAT & Sales Tax API GDPR-compliant?
All requests to VAT & Sales Tax API go through our EU-based gateway. Your upstream API key never leaves our server and no personal data is shared with the upstream provider beyond the request you send.

Pick an endpoint from the list on the left to see its details and try it.

Code snippets

Sign up to get an API key, then call any path under your slug.

curl https://api.oanor.com/vat-api/SOME_PATH \
  -H "x-oanor-key: oanor_test_..."
const res = await fetch("https://api.oanor.com/vat-api/SOME_PATH", {
  headers: { "x-oanor-key": "oanor_test_..." }
});
const data = await res.json();
$ch = curl_init("https://api.oanor.com/vat-api/SOME_PATH");
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_HTTPHEADER, ["x-oanor-key: oanor_test_..."]);
$response = curl_exec($ch);
import requests
r = requests.get(
    "https://api.oanor.com/vat-api/SOME_PATH",
    headers={"x-oanor-key": "oanor_test_..."},
)
print(r.json())

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